Home / 20,183.58-27,811.20-18,782.08

Finding the Fourth Proportional to 20,183.58, 27,811.20 and 18,782.08

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Solution

The fourth proportional to 20,183.58, 27,811.20 and 18,782.08 is: 25,880.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,183.58 : 27,811.20 = 18,782.08 : x
  2. Step 2: Convert to fraction form
    20,183.58/27,811.20 = 18,782.08/x
  3. Step 3: Cross multiply
    20,183.58x = 27,811.20 × 18,782.08
  4. Step 4: Simplify right side
    20,183.58x = 522,352,044.24
  5. Step 5: Solve for x
    x = 522,352,044.24/20,183.58
  6. Step 6: Final answer
    x = 25,880.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.